Defensive publication

ABSTRACT

WHEREIN R IS HYDROGEN, AMMONIUM OR SUBSTITED AMMONIUM WHICH WHEN HEATED ABOVE 200*F., DECOMPOSES INTO AN ACID AND A VOLATILE AMINE CONTAINING MOIETY (E.G., SULFURIC ACID, AMMOMIUM SULFANATE, AND PYRIDINE SULFAMATE). A VERY DESIRABLE WEIGHT RATION OF POLYGLYCIDYL ETHER TO CONVERTING RESIN IS FROM ABOUT 95:5 TO ABOUT 30:70, AND THESE CURABLE COATING COMPOSITIONS MAY BE DILUTED WITH CONVENTIONAL DILUENTS SUCH AS OXYGENATED HYDROCARBONS (KETONES, ETHERS, ESTERS, ETC.) TO FACILITATE HANDLING.   NH2-SO2-O-R   CURABLE CAN COATING COMPOSITIONS AND THEIR PREPARATION ARE DESCRIBED. MORE PARTICULARLY, AMINO-CONVERTED EPOXY COATINGS WHICH ARE ESPECIALLY SUITABLE FOR COATING ALUMINUM BEVERAGE CANS COMPRISE (A) A POLYGLYCIDYL ETHER OF A POLYHYDRIC PHENOL OF MOLECULAR WEIGHT OF FROM ABOUT 900 TO ABOUT 4,500; (B) A CONVERTING RESIN SELECTED FROM THE GROUP CONSISTING OF ALKYLATED AMINO RESINS AND PHENOLIC RESINS WHEREIN EACH OF THE RESINS CONTAIN ALKYLATED METHYLOL GROUPS, (E.G., UREA-FORMALDEHYDE RESINS); AND (C) A CATALYTIC AMOUNT OF A COMPOUND OF THE FORMULA

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice ofDec.';16, 1969, 869 O.G. 687. The abstracts of Defensive Publicationapplications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates thenumber of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files of.these applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oifice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED NOVEMBER 27, 1973 T916,002 COATING COMPOSITIONS Matthew B.Launikitis, Pare-One, Apt. B-30, Lindenwold,

NJ. 08021, and Clifford D. Marshall, 115 Rockingham Road, Cherry Hill,NJ. 08034 Filed Nov. 6, 1972, Ser. No. 304,163 Int. Cl. C08g 45/08,45/10 US. Cl. 260831 No Drawing. 12 Pages Specification Curable cancoating compositions and their preparation are described. Moreparticularly, amino-converted epoxy coatings which are especiallysuitable for coating aluminum beverage cans comprise (a) a polyglycidylether of a polyhydric phenol of molecular weight of from about 900 toabout 4,500; (b) a converting resin selected from the group consistingof alkylated amino resins and phenolic resins wherein each of the resinscontain alkylated methylol groups, (e.g., urea-formaldehyde resins); and(c) a catalytic amount of a compound of the formula wherein R ishydrogen, ammonium or substituted ammonium which when heated above 200F., decomposes into an acid and a volatile amine containing moiety(e.g., sulfuric acid, ammonium sulfanate, and pyridine sulfamate). Avery desirable weight ratio of polyglycidyl ether to converting resin isfrom about 95:5 to about 30:70, and these curable coating compositionsmay be diluted with conventional diluents such as oxygenatedhydrocarbons (ketones, others, esters, etc.) to facilitate handling.

